The book “13 Treasures” by Michelle Harrison tells about a girl who see’s things not seen by others but has problems with them too. A girl named Tanya can see mythical creatures not seen by others. She is frustrated because of the cruel creatures that torture her every night. Tanya tries to solve an unsolved mystery over fifty years ago about a girl who vanished in the woods by their whom her grandmother never speaks of. She seeks help from others. She finds a girl under ground and gets help from a boy name Fabian. In the end, she solved the mystery.